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In order to make a porportions with two ratios what must be true about the ratios?
Wiki User
∙ 13y ago
If there is a proportion a/b = c/d, then ad = bc.
Examples:
3/4 =? 5/6
3 x 6 =? 4 x 5
18 = 20 False (this is not a proportion)
16/6 =? 8/3
16 x 3 =? 6 x 8
48 = 48 True (this is a proportion)
Wiki User
∙ 13y ago
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